GetBrightnessPercent 33 ash/system/brightness_control_delegate.h virtual void GetBrightnessPercent( GetBrightnessPercent 29 ash/system/chromeos/brightness/brightness_controller_chromeos.h virtual void GetBrightnessPercent( GetBrightnessPercent 199 ash/system/chromeos/brightness/tray_brightness.cc delegate->GetBrightnessPercent(